"I saw him come across half court actually limping at one time, so that's when we pulled him," Popovich said, according to the San Antonio Express News. "I said 'Tony, you've got to stop, so we can figure out what it is.' He just couldn't go."

Parker's night had not gone well up to that point. He produced two points on 1-of-6 shooting in 25 minutes before being pulled. Parker's play wasn't what alarmed Popovich to the point he said he was "very concerned" about his star's health.

"My feeling is tendonitis, something in his shins or whatever, from the way it looked on the court, but I don't know," Popovich said.

Considering the level of concern expressed by the Spurs, Parker is likely to sit at least a few games to rest up for the postseason, which is only 15 days away.

"We thought he had just kind of recovered from his ankle, so this was something new tonight with his leg," Popovich said. "I just don't know what it is right now."

The Spurs must deal with Parker's injury in the interim while keeping an eye on Manu Ginobili's long-term health. San Antonio's Sixth Man is out at least three weeks for a strained hamstring, an injury likely to spill into the postseason.

These injuries have the potential to change the complexion of the race for the No. 1 seed in the West, after Thunder coach Scott Brooks made it clear he has no plans to rest players.